<template>
  <div class="login-container">
    <CanvsBg />
    <div class="content-box">
      <div class="loginImg">
        <img src="/img/login_banner.png" style="height:100%; width:100%">
      </div>
      <el-form
        ref="loginForm"
        :model="loginForm"
        :rules="loginRules"
        class="login-form"
        auto-complete="on"
        label-position="left"
      >
        <div class="title-container">
          <h3 class="title">小满工单系统</h3>
        </div>

        <el-form-item prop="username">
          <span class="svg-container">
            <svg-icon icon-class="user" />
          </span>
          <el-input
            ref="userName"
            v-model="loginForm.userName"
            placeholder="用户名"
            name="userName"
            type="text"
            tabindex="1"
            auto-complete="on"
          />
        </el-form-item>

        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="loginForm.password"
            :type="passwordType"
            placeholder="密码"
            name="password"
            tabindex="2"
            auto-complete="on"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon
              :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
            />
          </span>
        </el-form-item>
        <el-popover
          placement="bottom"
          width="200"
          trigger="click"
          class="forget"
          content="请联系系统管理员"
        >
          <el-button slot="reference">忘记密码？</el-button>
        </el-popover>
        <el-button
          :loading="loading"
          type="primary"
          style="width:100%;margin-bottom:30px;"
          class="loginBtn"
          @click.native.prevent="handleLogin"
        >登录</el-button>
      </el-form>
    </div>
    <div class="footer-copyright">
      Copyright © 2020 {{ companyName }}
    </div>
  </div>
</template>

<script>
import { validUsername } from '@/utils/validate'
import CanvsBg from '@/components/Canvas'
import defaultSetting from '@/settings'
import { mapGetters } from 'vuex'

const { companyName } = defaultSetting

export default {
  name: 'Login',
  components: {
    CanvsBg
  },
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error('请输入用户名'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码至少为6位'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        userName: '',
        password: ''
      },
      loginRules: {
        userName: [
          { required: true, trigger: 'blur', validator: validateUsername }
        ],
        password: [
          { required: true, trigger: 'blur', validator: validatePassword }
        ]
      },
      passwordType: 'password',
      redirect: undefined,
      companyName
    }
  },
  computed: {
    ...mapGetters(['loading'])
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.$store.dispatch('user/login', {
            data: this.loginForm,
            after: (defaultPage) => {
              this.$router.push({ path: defaultPage })
            }
          })
        } else {
          console.log('提交错误')
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: #000;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
    margin-bottom: 15%;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  height: 100%;
  width: 100%;
  background-color: #fff;
  overflow: hidden;
  .content-box {
    display: flex;
    width: 800px;
    margin: 10% auto;
    box-shadow: 0px 4px 14px #c8cacd;
    position: relative;
    .loginImg {
      color: #fff;
      width: 50%;
    }
    .login-form {
    position: relative;
    width:50%;
    max-width: 100%;
    padding: 7% 10%;
    background: #fff;
   }
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: #000;
      margin: 0px auto 40px auto;
      text-align: center;
    }
  }
  .forget {
    float: right;
    cursor: pointer;
    button {
      border: none;
      color: #aacefe;
      font-size: 14px;
      padding: 0;
    }
  }
  .loginBtn {
    background-color: #55a0ff;
    border: none;
    height: 14%;
    font-size: 16px;
    margin-top: 8%;
  }
  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .footer-copyright {
    position: fixed;
    bottom: 0;
    text-align: center;
    /* left: 50%; */
    /* right: 50%; */
    width: 100%;
    line-height: 100px;
    color: #999;
  }
}
</style>
